Extension device for tables and the like



J.`V E. LUNDQUIST. EXTENSION DEVICE FOB TABLES AND THE LIKE.

APPLICATION mfp MAR. 3l. 1920.

1,41 11 1 4. Patented Mar. 28, 1922.

I v 3 SHEETS'j-SHEET I. /d 9 /gf K f f f i f0/7/2 E Zz/zdyz/zb 1. E. LUNDQUIST. vEXTENSION-mm ron TABLES AND THE LIKE. APPLICATION FILED MAB. 3l, IS20- Patented Mar, 28, 1922;. 3 SHEETS- SHEET 2.

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APPLICATION FILED MAR. 31, 1920.

Patented Mar. 2s, 1922;

3 SHEETS-SHEET 3- I I I I UNITED sTAfrEs PATENT OFFICE.

JOHN E. LUNDotrisT, orciii'oiieo, ILLINOIS.`

EXTENsI'oNfnEVICEFon TABLES AND THE LIKE.

Be it known that l,- J oi-IN E.A LUivDQUis'r, a citizen ot the UnitedV States, .residing at Chicago, in the county or. Cook and Stat-e oi lllinois, have inveiiteda certainiie'Wand vuseiful E XtensionjDevice for rfables-'and thei like-or'V which the following is a specicasy ,may be readily applied. j

tion.

all times upon thel support and is capable o'libeing Wholly concealed from view when 'form.f Aniniportant :object of the invention is to the support is in. its normal or unextended provide an'l extension device of the character indicated Which is capable of being readily attached'to a support after it has been completed and gone into useaswell as when the support is under construction'.`

Another object oit-the .invention is to pro- -qvide an extensiondevice which is .of extreme" simplicity so .thaty it may manufactured at.4v a low cost, and 'which is at thesaine ktime o'iif .a practical and efficient character,"

Another objectv oi' the invention isA tovproj vide means of an advantageous character forl rigidly lockingA the parts ot the support when. extended against further separation,

so that Vthe support maybe conveniently movedabout from place to'place as awwhole` veven when the extension device islin its operative position.

, Still another object of the invention is to provide means for automatically' separating' the supplemental*leaves of the extension device when the sections of the support are separated, to permit of the independent.

movement of, the leaves into ktheir operative,

position as the sections ofthe support are separated. i

@ther objects and advantages oi', the invention will be apparent trointhe following description, wherein the invention is illus-l trated and 'described with considerable detail in connection With an extension table;

`1While theinvention is thus illustrated and The invention lhas general reference to tables, counters and like supports, and more oi'. Figa 3A showing one of vcollapsedposition;f

-speeifieationvfieuePatent, YPatented Mar. 28, 1922. application filed March i, i920. serial Nfopev..

described is'ippiiai a; a.' mbit, it wiii bef sary inthe caseot supports not originally made extensible to dividey the same into v.two

sections and provide extension yslides of ai standard character to which my invention ln the drawings, Figure l`, is a side eleva-v tionot tablepequlpped with my invention.

Qris a perspective vieW shoWingfthev inventionappled,to the extension slidesof the table butjvvith the leaves of the extension device vomitted-for .the sakeof rclearness".

.3 is al .fragmentary top. plan view of` thetable slioWing-twojleaves in their extended onoperative position and tvvo leaves in collapsed or inoperative position, itl being assumedr that the last mentioned leaves are held against `automatic extension Yby thek operator. F ig. 4 is a transverse sectional view through the. table taken online @-4, ot

Fig. Fig. 4"? is a fragmentary sectional vieu7 rs howing :the means fori effecting the automatic movement of the extension leaves Y or elements into operative position. Fig. 4b

iS asimila-r vievv showing the partsin dif- Y' lapsedor inoperativepositioni. Fig. `6 `is a' transverse sectional view taken on vline 6--6 Reter-ringto Figs. I and Bof the draveings, l and 1l designate the tvvo top sections" vof-a table having my invention embodied therein. Theftablemay be of any ordinary or preferred construction, having: a sectional tog-silipporting frame 2 mounted upon legs' lVithinthe frame 2 are mounted suitable extension fslides 4 of standard construction,

earh' comprising a pair otmemb'ers 5' and 6 V oi? brackets Qupon which isfsupporteda rod ltlzhaving swingab'lymounted thereon one or more extension'elements` or leaves 11; Herein l liave shown lfour v'suchV elements'.

l The :leaves l1; are made sectional in formi.

kthe leaves in its comprising two` substantially equal parts or near the hinged'ends ofthe sections 11b so as to 'permit of the swinging ofV the leaves upon the rod (Figf). y n

. The brackets 9-for supporting the rod 10 i and thereby the leaves 11 throughV the medium offthe'brackets 13, are located at one side of the center of the table la distance corresponding to that between the end of the #section 11b and the bracket 13. Said brackupper'surfaces of the leaveslying'flush with) f lside of the rodlO.

For supporting' the leaves 11V in their 'eXv Vtended relation `I provide for each leaf a Pivoted lOYCking armv 15. o Said'larms are mounted in brackets 16'- carried by a longiets `9 and 13V are so Vproportioned that when the sections of the leaves are swung into operative position their opposite ends rest uponltheextension slides, which thus' con#V stitute spaced supporting members, with the the upper surfaces 'of the top sections 1 and 1a of the table; and when the leaves are swung into their collapsed position as shown in Fig. 6 they assume a position somewhat below the table tops. In this latter position the free ends of the leaves are supported bya longitudinal bar 14 secured at its opposite ends to the cross-bars 8 and 8a land `at the center of the table opposite the tudinal v:barA 17 which is secured atits opposite ends to the cross-bars8 and 8I substantlally centrally thereof. At their upper ends thearms 15 havebearing portions 15's*l adapted to engage with the leaves adjacent their khinged joints (Fig. 4c). As shown -in saidV figure, the arms 15 are mounted upon their brackets 16 at one side of theircenters and the lower ends of the arms are adapted to enf gage withthe upper surface of the bar 17 :to

which serve to securetheleaves in operativeV limit the upward swinging movement of the arms. In order that said arms will 'automatically swing into inoperative position when released by the initial movement of the leafV sections in the operation of swinging them into their inoperative positions, thebearing portions 15a of said arms'are-made Vof substantial length so as to cause the karms to swing by gravity from upright to horizontal p positlon.

Upon the opposite edges of the leaves of the top sections 1 and 1a of the table are provided the usual pins and sockets 18 and 18",

relation whenthetable is, extended. In order that said pins'18 shall not interfere with the independentzswinging movement of the fwithout avreconstruction thereof. Y

leaves upon the rod 10 Irpreferably' arrange vthem in'spaced relation and provide coiled springs 19 upon the rod 10 adapted to bear at their opposite ends against the adjacent Vends ofthe brackets 13. Said springs are made of sufficient tension only to properly space the4 leaves apart when the sectlons of the vvtable are separated, beingV adapted to readilyv yield to kpermit the j leaves to be moved together into their operative relation.'

It will be observed tha-tthecross bars 8 and 81 connectedby the b'as'l'fl and 17 con` stitute a frame pivotally supporting 'the eX- Vtension leavesV and adapted -to7berquickly and easily securedtothe intermediate sec-.f tions 7 of the extension slides. This feature Vis of major importance since it' enables the attachment of the devicev tov tablesin use For the purpose offlockingthe parts of the table in vextended relation, permitting of the convenient Vmovement ofl the table as av whole from place to place vwithout'danger of further separation, l provide locking' means in the form ofpa telescopingrod 20.- Said rod consists of an inner section 20a anda sleeve 2Ob rigidly secured respectively` to the two table sections as by means of brackets 21 (Fig. 1); yA suitable number of supports 22 for lthe sleeve section 20b are providedy uponrthe frame 2 of the table, and Vat theV free end of the sleeve section- 2Gb is rigidly secured a collar 23 carrying a thumb-screw 24 which is operable into vengagement v'with` the rod section -20a to lock the sections ofthe rod together sand hence secure.y the parts of e the table against extension.-

rfa is desired that ,the .smanettare leaves"V operate automaticallyv 'from*ftheirjy Y collapsed position into extendedk relation',-

this may be accomplished by means `of Va spring 25 which may be provided between the sections of each of the leaves'11`as shown in Figs. 4a and 4J?. prisefa central coil 25fL havingoppositely extending arms 25bsecured in `the/ends of the sections 11a and 11by suitable sockets 26 1 being provided in the ends of the sections to receive the coil. For the'purpose of nor-V mally holding the leaves in their collapsed or folded position, a longitudinal member 27 is'secured upon theunder side of each of the top sections 1 and 1d of thetablev (Fig. 6).y These. members are adapted to slidably engage with the upper sections 11-b of the leaves as shown inl said ligure to hold it downwardlyon the section 11".d and the latter upon its support "14.v VSuit-able means such as an inclined member orguide 28 may be mounted upon the cross-bars 8 and 8EL and Said springsv may com-'- the support 14 to assistl the springs 25 in effecting'the. movement of the leaves into their operative position when such-'movement is permitted by the separation 'of the top sections 1 and 1. SaidV guide 28"'m`ay be madeofv sheet metal, oneedge being secured tothe underside oftheV support .14 and-the opposite edge mounted uponfa rod 29. having its opposite ends 30 mounted on the cross-bars 8 and'Sa.

s It will be understood that the membersV Preferably,lin order'to prevent the leaf sections from warping,I provideupon the v The supporting'- bar 17 atable or other support.

Y use.

under side thereof a 4plurality of metallic cleats 3l; `Hereinpne l,cleat is secured at .-sectlons hinged together .and` mounted upon said; rod for swingingy movement from an each endof the leaf sections.vv y

fr for the locking armsA 1,5 may also carry the-central ,center leg '32 whensuch a.v legis employ`edf. x Saidv bar, asshow'n in Fig. 5, hashereinone edge beveledUas at lfto permit ofthe. unrestricted operation Aof theleaves. l

It will be ySeen that Ij have provided 4means,

enabling, the quick. and easyr extensionY of of la, very practical character in that it is extremelysimple in construction' and operation,and moreover in that it may be em.

bodied, inY tables either inthe course of constructionor after they arecompletedand in p At the same. time, the leaves are adapted whenin theiry operative orextended posit-ion tov provide a firmand rigid support, andthe table when extended is capable of i being locked into a rigid whole so that it 4maybe conveniently movedaboutas desiredg I, claim aslmyinvention; l. A

, nitary extension devicer ment to tables or thelikehaving sectional slides for connecting v two relatively movable table sections, said device comprising a Vframe fixed to andi'supported by one of `the sections of each of said slidespaleaf` 'formed of twosections hinged together,y and a rod mounted in ixedpositionupon said frame and supportedl solelyI thereby and ton-which one of s aid leaf sections is' pivoted'. I

sections, said device com fprisingaY fir-ame fixedkv to and vsupportedV by sections of` said slides independently of said supporting means for thetable sections, a stationary tional slides for extension tables and the like, each ofsaid slidescomprising two' end sections andan intermediate section; off/a ivotal su a dort, meanrszrivid with andi-suv i-f,

ported by said intermediate sections of the lhe apparatus is .the opposite 'ends of ,therv intermediate slideY sections, a rod mounte'dat its opposite ends upon said fcross bars, a leafv` comprising two inoperative or folded position between` the slides to lany operative or extended. position with its opposites-ends resting upon the slides, a` supporting member carried by said cross bars, and means adapted to be entered between said supporting member and said leaf when the latter is in its extended position to support it in extended: position.

- QIn combination with a sectional support and apairvof slidesextensibly connecting the'sections of the support together, of an extension device-comprising a, frame carried by lsaid slides, a sectional extension element or leaf pivotallyV supported .by said frame von an axis parallel to said slides so as to be operable froma positionobetween the f slides into operative position above the slides with its; oppositeends restingthereon,

andfmeans cai-'riedby'the frame for locking. l

the extension-,element in its operativey position, the-.last mentioned means comprising a' ment-of the leaf element., f

6.'I'n combination with a, sectional support and a pair of slides extensibly connectd Y ing 'the sections of the support` together, of

2, An extension device for extension-tables 5 and the like having two relativie-lyv'movable sections, supporting means Afor-each ofv said sections,and sectional slides connecting said:

an extensiondevicecomprising a:fra1ner-car ried` by saidfslides, a sectional extension element or leaf; pivotally supported. by said' frame on an axis parallel to said slidesso as toberoperable Afrom a position between the slides into operative positionA above the slides withits opposite ends resting thereon.

and a stop member pivotally mounted at;y its lower 'end upon the frame so as to be swung into upright position with its free end eninto inoperative positionfupon the support, said member beingA automatically movable inone direction when1 released byv the initial movement ofthe leafelement.

7. Incc'ombination with-fa support formed in tvvo sections and having a pair of slides Vgaging beneath the extended leaf element or extensibly connecting Vthem together, leach slide consisting of a pair of members con-` nected respectively to vsaid sections of the support and an intermediate member, a pair ofcross-bars secured at their oppositeends to and supported by said intermediate slidev members, a rod carried solely by, said crossbars, a plurality of sectional leaves the sec-V -tions of which are hingedtogether and swingably mounted uponrsaid rod so as'to be operable lfrom a position beneath the rod to a position above it with the free ends of thesections 4resting uponlthe` slides, a s upporting member securedl at its opposite ends to said cross-bars, and a locking member for` each ofv said sectional leaves carried by said supporting member :and adapted to maintainl theV leaves in extended orAv .operativel position.

Spin combination with aisupportiformed in two sections and having apair of slides extensibly -connectingthem together, each slide consisting of a pair of members connectedirespecti'vely to said sections and an Vintermediate member, a pair of cross-bars secured at their opposite endsto said inter-` n in vextended or operative positiom'saidleaves and sections fof the supporthaving interfitting pins and sockets, and yieldable means arranged. between the sectional leaves and' adapted to space them apart to permit of, their.. independent operation unrestricted yby said pins; Y

9. The combination with a sectional extension table having a main support consisting of separate members movable away from each other whenV the sectionsV are extended, v and slideslconnecting the sections, of a uni-vk tary means wholly independent ofsaid members constituting an auxiliary support, said means comprising a frame secured to and supported by said slides, and a folding sectional leaf pivotally mounted on said' frame.

10. 1n adevice of the class described, the combination of a pair of spaced supporting members, a plurality of sectionaly leaves swingablv mounted. onran .axis disposed between said supporting members, said leaves being operable from a position below such Vaxis to operative position above such axis` with the free ends of the leaves resting upon said supporting members, means mounted below the joint between the leaf Vsections and;

adaptedfto v'support the.' center'of the leaf, said leaves-having pins and sockets upontheir edges adapted to interengage, and;

yieldable means betweenk the severalleaves normally spacing them apart to permit of` their independent operation unrestricted by said pins;V Y Y l1.-V The combination with a pair of'rspaced i supporting members, of a support extending between said members and. having mounted thereon afrod extending parallel with said' members, a plurality of leaves swingably mounted uponsaid rod and each *compi-1s ingl two sections hinged together, one-'of said sections having'a bracketfbyv means of j wvliich 'thefleaf is mountedupon said rod,

means for supporting thesections ofthe leaves against flexing when-swung' intoposition with their opposite ends resting uponf said supporting members, and sp'rlng meansv mounted upon said rod and bearing between the brackets of lthesevera'l lleaves to space them apart whereby to permit of their 'fr`ee` and. unrestricted independent operation.

12.V Ina device' of the class described, the` combination with a support formedfin two sections having slides extensiblyfconnecting them together, of a sectional extension element mounted to-'swing onanl axis between the slidesand parallel thereto from an inoperative or folded position to anoperativ'e or extended position with itsopposite endsresting upon said slides, the sections of said element being hingedly connected together and having at saidconnection a springno`r`v mally ytending to move the sections tof-"the carried by one v section of thesupport adapti element into extended relation, and `means ed to hold said 'element againstvpniovement under the action of Said' spring. il

13. Inatable or the like, the combination with a' support formed in two sections, and4 means extensibly connecting the sections 'together, of al Lframe carried by thecon-necting Vmeans, a plurality of sectional `leafeleinents mountedupon theframe so as to be swing-V able'from an inoperative or'folde'd position Y to operative or extended position in aline-V mentv with the tops ofthe sections', said extension elements and the section tops having interengaging pins and vsockets, spring" means' for yieldably spacing s'aidleaf ele# ments and said sections apart to permit of the independent movementof the elements,

and means for locking the sectionsl ofY the' support together with one or more ofthe ex-y tension, elements inoperative position therebetween'.`

M 'In a table of the class described, theV combinationwith'y asupport formedl in two ,sections-extensibly connected together, of an auxiliary support element adapted tobe po-v sitioned between thetops of the sections, and

means for'locking the sections together with said auxiliary element interposed therebetween, said means comprising a pair of telescoping members secured respectively to the sections of the support, and a device for securing said telescoping members together in fixed relationship.

15. The combination in a table or like support having two relatively movable sections7 of a pair of slides extensibly. connecting said sections together and each comprising a pair of end sections and an intermediate section, means rigid with and supported solely by said intermediate sections of the slides providing a stationary pivotal support, a leaf formed in two sections hinged together mounted upon said pivotal support for swinging movement from a position between said slides to an extended position with its opposite ends resting upon the slides, and means 4for supporting said leaf in its eX- tended or operative position.

16. The combination of. a pair of sectional slides for connectingtwo table sections together, each comprising a pair of end sections and an intermediate section, a pair of cross bars secured atv their opposite ends to theopposite ends of said intermediate slide sections, a rod mounted upon said cross bars and disposed longitudinally between the slides, and a leaf formed in two sections hinged together and mounted upon said rod so as to be swingable from an inoperative position below the rod to an operative oi" extended position above the rod with its opposite ends resting upon said' slides, the

hinged ends of said leaf sections being adapted to swing between and below said cross bars inthe swinging movements of the leaf.

17. The combination in a table or like sup. port having two relatively movable sections s and a pair of sectional slides connecting said sections together and each comprising a pair of'end sections and an intermediate section; of a pair of cross bars secured at their opposite ends to the opposite ends of said intermediate slide sections, a rod mounted upon said cross bars and disposed longitudinally between the slides, a leaf formed in two sections hinged together and mounted upon said rod so as to be swingable from an inoperative position below the rod to an operative or extended position above the vrod with its opposite ends resting upon said slides, the hinged ends of said leaf sections being adapted to swing between and below said Cross bars inthe swinging movement of the-leaf, and a support carried by vsaid cross bars'and havingmeans adapted to support the leaf in its extended position, said support being located so as to permit ofthe unrestricted swingin'g movements ofthe leaf.

18. An extension tablcha-ving, in combina` tion, two table-top sections movable toward vand away from each other,slides connecting rthev sections, a frame secured to and support-v ed by said slides, aplurality of folding sectional leaves pivotally --mounted on vsaid frame, and springs located between the leaves and tending to move the leaves apart.'

In testimony whereof, I havev hereunto set my-hand. y'

f JOHN LUNDQUIST. 

